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Finding the Fourth Proportional to 7,220.64, 10,816.98 and 4,747.98

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Solution

The fourth proportional to 7,220.64, 10,816.98 and 4,747.98 is: 7,112.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.64 : 10,816.98 = 4,747.98 : x
  2. Step 2: Convert to fraction form
    7,220.64/10,816.98 = 4,747.98/x
  3. Step 3: Cross multiply
    7,220.64x = 10,816.98 × 4,747.98
  4. Step 4: Simplify right side
    7,220.64x = 51,358,804.70
  5. Step 5: Solve for x
    x = 51,358,804.70/7,220.64
  6. Step 6: Final answer
    x = 7,112.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.